pi-4QPSK

说明：  本压缩包收集了较为经典的几种关于BCH和RS编译码的matlab程序，以及通信系统的仿真等。供大家参考学习，搬运整理而得(This compression package collects several classical matlab programs about BCH and RS coding and decoding, as well as the simulation of communication system. For your reference and study, handling and sorting out)

说明：  very important dtmf project

建立无线传感网中节点路由的减少重传次数的一种算法(An algorithm to establish the number of node routing in wireless sensor networks to reduce retransmission)

通过控制并口给刺激与记录信号，行为电生理实验用(By controlling the parallel port to stimulate and record signals, for behavioral electrophysiological experiments )

又一个利用网上寻呼提供商的web页面来发送网上寻呼的程序，可以支持很多提供商。(Another program which uses web pages of internet call provider to send internet calling , and supports many providers)

仿真了不同距离下的多径信道衰落模型，包含大尺度衰落和小尺度衰落。(The multipath channel fading model at different distances is simulated, including large scale fading and small scale fading.)

说明：  心电信号预处理方法研究，内含MATLAB仿真代码与研究文档。(Research on ECG signal preprocessing method, including MATLAB simulation code and research documents.)

MIMO技术中瑞利衰落信道的MATLAB源程序的仿真(rayleigh fading channel generator)

costas环解调程序，需要的可以参考一下。costas环解调.m(It is a matlab code for demodulation as costas ring .if you are interested in it, you can refer to it.)

次程序用来仿真线性调频脉冲下的一维距离像，可以对比压缩前后的目标回波信号(Second program is used to simulate the next chirp like a one-dimensional distance, you can compare before and after the target echo signal compression)